J/A+A/709/A238ivo://CDS.VizieR/J/A+A/709/A238CDSChaudhary R.Joshi R.Das S.Fumagalli M.Kacprzak G.G.Fossati M.,Peroux C.Ho L.C.2026-06-01T06:19:08Z2026-05-19T12:29:25ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frquasarsline-intensitiesstellar-massesvisible-astronomyWe investigate the origin of intervening cool MgII absorption detected in the spectra of background quasars and the nature of associated galaxies across a broad redshift range of 0.3<=z<=1.6, and largely unexplored galactocentric distance of <~20kpc. Using nebular [OII]{lambda}{lambda}3727,3729 emission lines identified in DESI fiber spectra centered on quasar, we detect 342 galaxies at a typical detection rate of ~0.45% at z<~1, which increases with MgII equivalent width (W2796). A significant fraction (74%) of these galaxies are associated with strong absorbers with W2796>=2{AA}. These absorbers trace galaxies spanning stellar masses of 8.4<=log(M*/M_{sun}_)<=11.6 and star formation rates of -1<=log(SFR[M_{sun}_/yr])<=2.7, located at projected galactocentric distances of 4-24 kpc. We find the average MgII absorber strength increases from 2.1{AA} to 2.8{AA} between redshifts z~0.4 and 1.2, indicating evolution in the cool gas content of galaxy halos. The relatively constant absorber strength with galactocentric distance implies a clumpy structure of cool gas in the circumgalactic medium. Further, we find a positive correlation between W2796 versus stellar mass (M*), and star formation rate (SFR), suggesting that the distribution of metal-enriched cool gas in the CGM is closely tied to the properties of the host galaxies. The redshift evolution of gas-phase metallicity suggests that strong MgII absorbers trace the general population of star-forming galaxies. The velocity dispersion of the cool gas increases with halo mass, and the wide range of line-of-sight velocity offset (-389 to 364 km/s) between the galaxy systemic velocity and absorbers highlights the dynamical nature of CGM. However, the majority of this gas remains gravitationally bound to the dark matter halos, consistent with a picture of gas recycling via galactic fountains.2026A&A...709A.238Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/709/A238CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/695/A207 : BEINGMgII. II. Galaxies with strong MgII absorbersJ/A+A/695/A206 : BEINGMgII. I. Galaxies with USMgII absorbers (Joshi+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/709/A238https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/709/A238http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/709/A238https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/709/A238https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/709/A238http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/709/A238GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/709/A238/catalog (MgII absorber host galaxy properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/709/A238/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/709/A238/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/709/A238/catalog?GETtext/xml+votable180.050000true212.183130.791890.0055555555555555566/134 140 234 512 733 2052 2098 2102 2176 4101 4106 4119 4134 4228 4280 4307 4313 4331 4351 4357 4375 4380 4418 4478 4614-4615 4656 4689 4692 4705 4721 4743 4748 4752 4772 4788 4818 4862 4890 4979 5086 5160 5175 5322 5348 5363 5390 5403 5425 5448 5484 5570 5613 5678 5765 5946 6030 6083 6089 6160 6225 6245 6247 6261 6266 6459 6534 6609-6610 6932 6982 7141 7158 7197 7341 7345 7496 8196 8200 8219 8223 8262 8303 8316 8332-8333 8375 8378 8392 8545 8612 8627 8920 8951 8993 9027 9044 9049 9130 9141 9157 9183 9296 9314 9344 9346 9348 9397 9402 9500 9559 9595 9610 9614 9626 9693 9765 9774 9790-9791 9797 9823 9909 10091 10340 10368 10402 10427 10435-10436 10440 10449 10465 10483 10514 10518-10519 10550 10637 10719 10756 10823 10864 10911 10931 10960 10967 11005 11076 11177 11333 11418 11430 11455 11591 12305 12312 12354 12361 12633 12789 13346 13421 13463 15294 16004 16064 17213 17243 17272 17308 17339 17353 17360 17365 17369 17385 17407 17424 17489 17492 17518 17525 17560 17597 17633 17696 17746 17766 17809 17835-17836 17854 17883 17895 17947 17972 18030 18078 18080 18099 18133 18147 18158 18163 18176 18179 18226 18229 18231 18244 18259 18267 18285 18306 18326 18373 18403 18616 18634 18704 18716 18779 18788 18809 18837 18858 18860 18863 18897 18929 18938 18954 18991 19007 19022 19045 19091 19097 19128 19134 19141 19153 19201 19280 19283 19331 19338 19422 19465 19495 19504 19519 19569 19573 19589 19596 19608 19630 19640 19683 19710 19764-19765 19828 19851 19862 20083 20104 20163 20197 20206 21848 21874 21955 21957 21959 21977-21978 21980 22014 22564 22572 22584 22586 22643 22651 22673 22678 22704 22712 22717-22718 22742 22744 22747 22752 22766 22769 22783 22922-22923 23069 25520 25530 25533 25546 25574 25577 25597 25722 25804 25807 25817 25819 25821 25835 25853 25855 25892 25902 25913-25914 25918 25927 25932 25944 25946 25953 25958 25961 25966 25985-25986 26005 26007 26017-26018 26039 26067 26082 26098 26115 26133 26136 26138 26140 26143 26146 26150 26164 26168 26170 26174 26179 26196-26197 26210 26220-26221 26226-26227 26238 26263 26269 26276 26280 26284 26309-26310 26315 26329 26395-26396 26432 26498 26502-26504 26717 26855-26856 26861-26862 26867 26869 26878 26887 26894 26924 26947 26949 26971 26982 26987 27008 27013 27052 27055 27059-27060 27063 27071 27074 27083 27098 27104 27112 27114 27140-27141 27149 27151 27172 27183 27186-27187 27196 27198 27203-27204 27206 27232 27238 27242 27247 27250 27258 27267 27280 27283 27289 27296 27304 27308 27312 27326 27336 27368 27386 27393 27395 27398 27402 27404 27406 27411 27416 27445 27655 27661 27704 28117 28184 28190 28207 28216 28229 28406 28536 28637 28653 30974 31160 31202 31316 31339 31346 31358 31379 31396 31399-31400 31405 31418 31426 31436 31457 31460 31468 31476 31487 31490 31518 31527 31529 31550 31627 31630 31635 31637 31639 31666 31728 31930 31982 32260 32289 32317 32356 32401 32416 32419 32429 32556 32648 32662 32677 32695 36341 36349 36553 36641 36684 36697 36701 36744 36789 36805 38863 40822 40827 40893 40906 40925 40930 40940 40946 45019 45051 45053 49049 49052https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/709/A238?format=asciiOpticaldefaultJ/A+A/709/A238/catalogMgII absorber host galaxy propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOSDSS J2000 quasar name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharzabsMgII absorber redshiftsrc.redshiftfloatWr2796MgII 2796{AA} rest equivalent width0.1nmspect.line.eqWidthfloate_Wr2796Error on the MgII 2796{AA} rest equivalent width0.1nmstat.errorfloatWr2803MgII 2803{AA} rest equivalent width0.1nmspect.line.eqWidthfloate_Wr2803Error on the MgII 2803{AA} rest equivalent width0.1nmstat.errorfloatRAJ2000Galaxy right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Galaxy declination (J2000)degpos.eq.dec;meta.mainrhoImpact parameterkpcsrc.impactParamfloatb_logMstar? Stellar mass lower boundlog(solMass)phys.mass;stat.minfloatnullablelogMstar? Stellar masslog(solMass)phys.massfloatnullableB_logMstar? Stellar mass upper boundlog(solMass)phys.mass;stat.maxfloatnullableb_SFR? Star formation rate lower boundsolMass/yrphys.SFR;stat.mindoublenullableSFR? Star formation ratesolMass/yrphys.SFRdoublenullableB_SFR? Star formation rate upper boundsolMass/yrphys.SFR;stat.maxdoublenullableCategoryCategory (1)meta.notecharSurveyOrigin survey (SDSS or DESI)meta.refchar